Wrench



H. R. SEGAL Oct; 24, 1933.

WRENCH Filed Sept. 3, 1931 r MNVENTOR. ha

A TTORNEY Patented Get. 24, 1933 4 STTES PATNT orricr.

1,931,559. WRENCH Hyman It. Segal, New York, N. Y. Application September3, 1931. Serial No. 561,024

2 Claims. ,(01. s1 1oa) 10 a worm coacting with one of the clamping ele-15 apart.

Another object is to provide a wrench with the jaws thereof adjustableby remote control for reaching and turning a clamping member or a pipeconfined in a narrow space.

The invention is exemplified in the combination and arrangement of partsshown in the accompanying drawing and described in the followingspecification and it is more particularly pointed out in the appendedclaims.

In the drawing:

Fig. 1 is a view in elevation of the wrench partly in section and partlycut away to show'the mechanism for adjusting the wrench jaws or clampingelements.

Fig. 2 is a section along the line 2--2,- of Fig. 1.

Fig. 3 is a section along the line 3--3, of Fig. 1.

Fig. 4 is a fragmentary view in elevation, showing a modifiedmanipulator for operating the worm. v

Fig. 5 is a section across the line 55 of Fig. 1.

Fig. 6 is a perspective of the saddle or yoke member. I

As illustrated, the wrench includes a lower jaw, or clamping elementgenerally designated, 10

40' having an upper serrated face 11 and a saddle supportingintermediate portion 12 provided with a worm receiving recess 13 and aspindle or stem receiving groove 14.

Associated with the saddle support portion 12 and preferably integraltherewith is the depending extension 15 having a longitudinally disposedslot 16 adapted to receive the spindle 17, although, it is to beunderstood that extension 15 may be a tube or the like for receiving thespindle.

A hollow handle 18 is secured to the spindle receiving extension 15 andabutsshoulder 19 of saddle support 12.

Secured to one end of the spindle is the worm 20 in mesh with rack 21 ofclamping serrated jaw 22. Worm 20 is suitably guarded in recess 13 forproper coaction with rack 21 in any well known fashion.

Spindle 17 lies within groove 14 of the saddle support and slot orchannellfi of extension 15 and its free end has secured theretoa'knurled manipulator 23 for rotating the spindle to actuate worm 20 andadjust upper jaw 22 with respect to the lower jaw 11.

A hollow yoke or saddle 24 hinged to the lower jaw 11 by means of pin 25loosely embraces the intermediate or saddle supporting portion of lowerjaw and the rack 21 for guiding the latter when actuated by the worm.

In order to maintain the worm and rack in mesh, a leaf spring 26 securedto saddle support 12 has its free end abutting against an inner wall 27of the saddle to yieldingly maintain the latter against the rack.

In operation, to adjust the jaw 22 with respect to jaw 11, motionimparted by the operator to manipulator 23 is directly transmitted tothe worm which in turn causes the upper jaw to move relatively of thelower. Of course relative adjustment of the jaws may also be had bydirectly operating the worm, a portion of which projects beyond suitablealined openings 28 in the sides of the saddle.

Where it is desired to increase the mechanical efficiency of the wrench,manipulator 23 (see Fig. 4) instead of being knurled may be providedwith laterally or radially extending arms as 24.

With the present invention and an advantage thereof resides in the factthat a member, say a nut or pipe, in a relatively small space and inaccessible for an operator to reach, may be adjusted or turned by thedevice herein disclosed in first applying the clamping elements to thenut or pipe, and secondly clamping the elements to the nut or pipe froma point remote thereof by actuating the manipulator 23.

The foregoing disclosure has been given by way of example for clearnessand understanding of the principles underlying my invention. Hence nounnecessary limitations should be understood and the appended claimsshould be construed as broadly as the state of the art permits.

I claim:

1. As an article of manufacture, a wrench having a clamping jawincluding an extension having a longitudinally disposed slot, a handlesecured to said extension and enclosing said slot, a spindle arrangedwithin said slot and having a portion projecting beyond the handle, saidjaw having a transverse opening in communication with said slot, a wormdisposed in said opening and conliii nected to one end of said spindle,a rack having a complementary clamping jaw, a saddle hinged to the firstmentioned. jaw to interconnect the rack and worm, means to hold thelatter and rack in mesh and means carried by the portion of the spindleprojecting beyond the handle for adjusting one of said jaws relative tothe other.

2. As an article of manufacture, a Wrench having a slotted clamping jawand including a depending extension having a slot in communication witha longitudinal slot of said jaw, a handle secured to said extension andenclosing a major portion of the slot thereof, a spindle disposed in tothe 7

